baber/WOPTO huggingface dataset:
Patent GB-436911-A (GB)
Title: Improvements in variable inductances
IPC: H01F21/06
Filed: 1934-06-25
Abstract: 436,911. Inductances. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and SMITH, C. G., c/o General Electric Co., Wembley, Middlesex. June 25, 1934, No. 18721. [Class 37] A variable inductance, for example a tuning inductance for a wireless receiver, comprises a plurality of coils and a magnetic core which are relatively movable so that an increase of coupling between any pair of coils is accompanied by an increase in the effective permeability of the medium. In the construction shown, two solenoids 1, 2 of different diameters are connected in series and are adapted to slide over one another and also over a core 3 of finely divided magnetic material. This is effected by mechanism which may be so arranged that the solenoids 1, 2 approach the core 3 symmetrically, or the solenoid 2 may first slide over the core 3, these two elements then sliding together into the solenoid 1, which is fixed. Specification 410,327 is referred to.
Patent GB-1034046-A (GB)
Title: Roll film photographic camera
IPC: G03B17/42
Filed: 1963-01-22
Abstract: 1,034,046. Roll film cameras. EASTMAN KODAK CO. Jan.22, 1963 [Aug. 20, 1962], No. 18766/65. Divided out of 1,034,045. Heading G2A. A roll film camera has a film driving mechanism coupled to the take-up spool, the coupling member being connected to the driving mechanism by a contractable link, so that it remains connected thereto when withdrawn from engagement with the take-up spool in order to remove the latter from the camera. In the form shown, the film is wound across from a supply recess 21 on to a take-up spool 23 in recess 25 by a lever-wind mechanism. This comprises a lever 27 having cogs 37 which engage with a driving gear 39. Keys 47 on gear 39 engage in slots 49 on a spring pawl 45, the two arms of which co-operate as a uni-directional clutch (anticlockwise) with the clutch face 41 of a metering wheel 43. This is keyed by lugs 61 to a flexible drive link 57, and so to a spool coupler 59, leaf spring sections 63 of the drive link co-operating with ratchet lugs 65 of the coupler. The bottom face of the coupler has lugs 67 which, in the operative position, engage ribs 69 at the end of the spool, so transmitting movement from the lever wind (Fig.3). A movable elevator member 73 has a similar function to that of the movable locking element 8 in the parent case. When the release member 19 is pressed upwards to unlatch the camera cover 13 and allow it to swing open, the elevator moves upwards and lifts the spool coupler 59, against the spring action of the flexible drive link 57, out of engagement with the spool, so allowing the latter to be removed. When the camera cover is pressed closed again, in a manner similar to the arrangement in the parent Specification, a spring 81 moves the elevator downwards again, latches the cover in the shut position, and allows the coupler to move down again to engage with the spool. The shutter is also set by the lever wind, Fig. 7 showing the mechanism at rest. As the lever 27 is turned anticlockwise against spring 55, a foot 133 thereof comes into contact with a lip 135 of the shutter-striking plate 111, turning it clockwise against spring 115. When it has reached the position of Fig. 10 (not shown) a finger 109 of the plate is trapped by the shutter latch 123; the shutter is now cocked. In order to prevent the lever wind from being moved by a series of short arcs, which would wind the film without executing the whole arc necessary to set the shutter, a ratchet wheel 127 is fixed to gear 39. A pawl 129 engages with this ratchet to allow anti-clockwise movement only, until plate 111 has reached the "set" position (Fig. 10, not shown), when the lip 135 on the plate engages an ear 137 (Fig. 9, not shown), and tilts it out of engagement with the ratchet. When the shutter release 29 is pressed, the latch 123 releases the striking plate 111; a finger 109 on the latter strikes a lug 107 of the shutter, so causing it to operate. Although described in connection with a manually operated wind, the invention is also applicable to power-wound cameras.
Patent GB-1221148-A (GB)
Title: Shellfish trap
Inventor: SCHULTZ NILS C
IPC: A01K69/08
Filed: 1969-04-11
Abstract: 1,221,148. Shellfish trap. FATHOMS PLUS Inc. 11 April, 1969, No. 18767/69. Heading A1A. A demountably constructed plastics shellfish trap of elliptical plan form has a pair of substantially opposed openings adjacent the minor axis of the elliptical plan form. Two identical unts 10, 10A, each having a frusto-conical insert 24 with a plurality of fingers 30 pressed into the opening in its side wall, are attached by hinges 42 and catches 44 to form the trap frame. Adjacent the inner end of each insert 24 is a bait holder 32 comprising a cage-like cylindrical structure vertically mounted in the frame unit, a lug 38 on each end of the bait holder engaging a key-hole slot 36 in web plates 34 carried by the corresponding top and bottom members of the frame unit. To facilitate loading, the bait holder is divided longitudinally, the parts being held together by retainers in tho form of hinges and catches or clips. In an alternative embodiment the side walls of the frame units are inclined to provide stability on a flat surface.
Patent GB-409162-A (GB)
Title: Improvements in or relating to manifolding material
IPC: B41L1/32
Filed: 1933-07-03
Abstract: 409,162. Manifolding-forms. SHERMAN, J. Q., R. R., 1, Philadelphia Drive, Dayton, Ohio, U.S.A. July 3, 1933, No. 18843. Convention date, July 18, 1932. [Class 16.] A manifolding assembly comprises continuous and superposed sheets or strips of record and transfer material wherein the respective sheets or strips have a succession of apertures or cut-out areas of different size located in overlapping relation with each other. As shown, holes are provided in the margins of the strips for engagement by the feeding pins of a writing- machine, those in the transfer strips 12 being of larger size than those in the record strips 11. If desired, especially when tissue or other record material susceptible to varying atmospheric conditions is employed, the larger holes may be provided in the record strips. Instead of round holes, the margins of the strips may be provided with open notches or feeding apertures of different sizes. The difference in size of holes permits limited relative displacement of the strips, and compensates for imperfections of manufacture, shrinkage, and expansion. The transfer and record strips have scored lines 15, and these scored lines are preferably omitted at certain positions on the transfer strips where score lines 18 define tabs 16. The tabs are formed alternately on the respective ends of successive lengths of transfer strips when the assembly is separated along the scored lines. Specification 372,980 is referred to.
Patent GB-1160046-A (GB)
Title: Polyolefin Catalysts and processes using a Four-Component Catalyst containing Halides of Zinc or Cadmium
IPC: C08F4/68
Filed: 1968-04-22
Abstract: 1,160,046. Polyolefin catalyst. GULF RESEARCH & DEVELOPMENT CO. 22 April, 1968 [12 May, 1967], No. 18864/68. Heading C3P. A polymerization catalyst comprises (a) an organometallic compound of a Group III A  (Mendeleef) metal (b) a halide of a metal of Group IV B , V B  or VI B  (c) an additive selected from polyamines, polyethers, aminoethers, aminoalcohols and hydroxyethers which chelate metals and (d) zinc or cadmium halide which is preferably used in an amount to lower the molecular weight appreciably but not reduce isotacticity more than five per cent. The preferred combination is triethyl aluminium, titanium trichloride, N,N,N<SP>1</SP>,N<SP>1</SP>-tetramethylmethylenediamine and zinc chloride and this may be used to polymerize a mono 1 olefin of three to eight carbon atoms . In the examples, using the above preferred catalyst combination in pentane, propylene monomer is continuously polymerized to produce polypropylene of high isotacticity. The polymer is treated with methanol and 2,4-pentanedione to facilitate catalyst removal.
Patent GB-628915-A (GB)
Title: Racks and like devices for supporting or displaying articles
IPC: A47F5/10
Filed: 1947-07-15
Abstract: 628,915. Folding racks. ISLINGTON METAL PLATING WORKS, Ltd., and SELBEY, H. July 15, 1947, No. 18867. [Classes 52 (iii) and 52 (v)] A folding rack has uprights 15 connected in pairs by horizontal strips 16, the front and rear frames being connected by pivoted levers 20, the levers on one side of the rack carrying an inverted U-shaped clip 21 adapted to fit over the lever 20 of an adjacent rack to form a rack assembly. The levers 20 are secured in the open position by a notch 24 in a plate 23 attached to an upright. Trays 19 having a folded-over rear edge 27 may be supported in either a horizontal or inclined position. The rack may also te hung on a wall on brackets 34 or be supported on a trolley.
Patent GB-719971-A (GB)
Title: An electromagnetic driving arrangement for oscillating structures
IPC: H02K33/02
Filed: 1952-07-25
Abstract: 719,971. Electromagnetic vibrators. LICENTIA PATEN T-VERWALTUNGSGES. July 25, 1952 [July 27, 1951], No. 18871/52. Class 35 An electromagnetic vibrator has at least two parallel connected motors each of which is fed from an A.C. main through separate half-wave rectifiers 6, 6<SP>1</SP>, the connections being so arranged as to cause the motors to operate simultaneously in the same direction. Each motor has two main parts 2 and 3 or 2<SP>1</SP> and 3' joined by springs 4 or 4<SP>1</SP>, the parts 2, 2' being rigidly connected to a trough 1 whilst the parts 3, 3<SP>1</SP> being arranged to carry the bodies of the magnets. The motors can be controlled. together by a single control device, e.g. a resistance or an inductance or a regulating transformer arranged between the mains and the individual rectifier-motor circuits.
Patent GB-904372-A (GB)
Title: Improvements in or relating to anti-dazzle devices
IPC: G02C7/16
Filed: 1959-06-03
Abstract: 904,372. Antidazzle devices. ARMITAGE, L. R. May 18, 1960 [June 3, 1959], No. 18995/59. Class 97 (1). An antidazzle device, for example the spectacles shown, comprises an eyepiece having a clear lower portion 1a and an upper portion 1 extending to the upper boundary of the eyepiece and formed of alternately clear and opaque layers, the interfaces between the layers being arranged so as to provide a line of sight through the clear layers. A screw 6 with a nosepiece 5 is provided for varying the position of the eyepieces on the wearer.
Patent GB-1142891-A (GB)
Title: Method of producing porous carbon bodies of stratified constitution
IPC: C01B32/384
Filed: 1966-04-29
Abstract: 1,142,891. Stratified porous carbon bodies. SIGRI ELEKTROGRAPHIT G.m.b.H. 29 April, 1966 [5 May, 1965], No. 19082/66. Addition to 1,132,458. Heading C1A. [Also in Division H1] Stratified porous carbon bodies in which each individual layer is substantially homoporous in itself but has a median pore diameter different from that of adjacent layers are made by compacting substantially binder free particles of cellulose of uniform grain size, each adjacent stratum being compacted at a different pressure and/or in the presence of a different amount of a volatile polar liquid, and carbonizing the compacted material. Water and alcohols are specified as the polar liquids. If the carbon bodies are to be used as electrodes in fuel cells, the polar liquid may be a solution capable of depositing catalyst in the carbon body, e.g. an aqueous solution of copper sulphate or nickel sulphate.
Patent GB-1487058-A (GB)
Title: Articles having hardened surfaces
IPC: C09D5/00
Filed: 1976-05-10
Abstract: 1487058 Coatings REICHHOLD CHEMICALS INC 10 May 1976 19155/76 Heading B2E A hardened surface on an article is obtained by applying to a substrate a coating of a composition or otherwise forming the surface of the desired article from the composition and then subjecting the coated substrate or other article to pulsed radiation hardening, with the composition being formulated, optionally with one or more pigments, to contain at least one compound selected from (a) compounds containing at least two OH groups per molecule, the remainder of the compound being a polyether, an unsaturated polyester, a hydrocarbon, a hydrocarbon polymer, a polyurethane, a polyepoxy compound and/or a polysilicone or a polyamide containing at least two amino groups per molecule and (b) acrylic, methacrylic or itaconic acid of a homologues or polymerisable derivatives; a photo initiator selected from benzoin or its derivatives or a halomethylated benzophenyne also being present when the composition contains a compound selected from (b). The compositions may be applied to wood, paper, metal, plastics materials, leather, textiles and glass.
Patent GB-530799-A (GB)
Title: Regulating mechanism for windows or other similarly movable devices
IPC: E05F11/38
Filed: 1939-07-03
Abstract: 530,799. Actuating vehicle windows &c. hydraulically; valves. JENKINS, R. G. C. (Parsons, J. B.). July 3, 1939, No. 19366. [Classes 69 (ii) and 135] Vehicle windows or like movable devices are opened and shut &c. by fluid pressure means comprising a pump 34 actuated by an electric motor such as the starter motor 35 of the vehicle, the pump supplying motor cylinders 16, the pistons of which actuate the separate windows through levers 13, 14. The transfer of fluid between a reservoir 33 and each motor cylinder is effected through a motor valve 22, Fig. 6, normally closed by a spring and trapping fluid to lock the window, and opened by a window switch closing the electric motor circuit and also closing a circuit through a solenoid 30 attracting the valve stem and a common distributing valve, Fig. 2, the solenoid 56 of which in one position of the switch is inactive so that the pump draws fluid from the reservoir connection 37 to the pump inlet 43 and forces it through the outlet 44 and passages 50, 42 to the motor, while in another position, fluid is drawn from the passage 42 and forced into the reservoir. Obstruction of the window movement causes pressure or suction to build up on the outer sides of pistons 48, 49 on the valve, and, since these are of unequal areas, the valve is moved to place the pump inlet 43 and outlet 44 in communication through the space between the pistons. Depression of the starter pedal for the purpose of starting the vehicle engine closes a circuit through the solenoid 56 closing the windows and then putting the valve into bypassing position. The driver may control any of the windows by switches on the panel, and switches may be provided by which the rear seat occupants can control their own windows.
Patent GB-1528754-A (GB)
Title: Catches
IPC: E21B17/046
Filed: 1976-03-18
Abstract: 1528754 Bayonet catch EXPLORATION & PRODUCTION SERVICES (NORTH SEA) Ltd 18 March 1976 [8 May 1975] 19508/75 Heading E2B A bayonet catch comprises a tool holder 10, the lower portion 13 of which is formed with two slots 20 as shown in Fig. 3 and a tool support 22 provided with a pin 21 which in use engages slots 20. In use a tool is screwed into a threaded aperture 23 of the tool support 22 and the tool support is then pushed into hollow section 13 until its top member 26 engages a slider member 17. The support 22 is pushed up further against spring 16 until pin 21 enters slots 20 to position I (Fig. 3), is then rotated slightly and released until pin 21 reaches position II, is again rotated and pushed up until pin 21 reaches position III and is finally further rotated and released until pin 21 reaches position IV. Removal of the support 22 from holder 10 is effected by reversal of the above procedure. The catch is particularly suitable for use when lowering tools down an oil well as it provides a secure fastening even in the event of the tool holder jamming in the oil well tube.
Patent GB-650906-A (GB)
Title: Improvements in or relating to the manufacture of phenolic compounds
Inventor: BARKER CHRISTOPHER HOLROYD
IPC: C07C309/42
Filed: 1948-07-21
Abstract: Pre-heated phenol is reacted with concentrated sulphuric acid under such conditions of time and temperature that the product is mainly phenol-4-sulphonic acid with a little 2 : 4-disulphonic acid but substantially free from 2-sulphonic acid; the reaction mixture is then treated with an alcohol, olefine or alkyl hydrogen sulphate containing 3 to 8 carbon atoms in the presence of an additional quantity of sulphuric acid or other condensing agent to form a 6-alkyl-phenol-4-sulphonic acid.  The product may be (1) steam-distilled above 120 DEG  C. to give a 6-alkyl-phenol together with some phenyl ethers and/or excess phenol.  These may be separated by alkali-extraction and washing with water, or by fractional distillation preferably under reduced pressure.  The phenol may be used again, and the 6-alkyl-phenol further sulphonated and treated with dilute nitric acid (e.g. 25-50 per cent) to produce a 2 : 4 - dinitro - 6 - alkyl - phenol. Alternatively, (2) the sulphonated product may be nitrated without separation, giving mainly 2 : 4-dinitro-6-alkyl-phenols with some nitro-ethers and 2 : 4-dinitro-phenol.  These may be separated by treatment with alkali and hot water.  In the alkylation, losses of volatile materials can be reduced by low-temperature treatment of the alcohol or olefine with sulphuric acid to give the alkyl hydrogen sulphate, or by carrying out the reaction under increased pressure, or by introducing the alcohol or olefine below the surface of phenol-sulphonic acid and sulphuric acid at 80-100 DEG  C. with vigorous agitation.  The molar proportion of phenol to alkylating agent may be 1 : 1 to 3 : 1.  The lower values give rise to sulphonated ethers and possible di-alkyl-phenols, while the higher values cause the product to contain phenolsulphonic acids.  When a primary or secondary alcohol or a straight-chain olefine is used, a secondary alkyl substituent is introduced.  The preferred alkylating agents are butyl alcohol, butyl hydrogen sulphate or a butylene.  Examples are given.ALSO:2 : 4-Dinitro-6-alkyl-phenols are used as weed-killers either mixed with inert diluents such as talc or emulsified in water with dispersing agents to give a dispersion for spraying or a stock solution for dilution.  Other weed-killers, fungicides or fertilizers may be incorporated in the solid or liquid preparations, e.g. ammonium sulphate or urea.  The alkyl group contains 3 to 8 carbon atoms, secondary butyl being preferred.
Patent GB-859565-A (GB)
Title: Improvements in or relating to electrical signal storage arrangements
Inventor: CHAIMOWICZ ADAM
IPC: G11C21/02
Filed: 1956-06-25
Abstract: 859,565. Electromechanical delay lines. INTERNATIONAL COMPUTERS & TABULATORS Ltd. May 21, 1957 [June 25, 1956], No. 19583/56. Class 40(8). [Also in Group XIX] Electrical signal delay apparatus comprises an input transducer for generating a mechanical stress wave in a transmission medium in response to an electric signal, and an output transducer for generating an electric signal in response to the stress wave, the latter following a path in the medium whereby it operates the output transducer a plurality of times. Electric signals from an input device 4 are fed to an input coil 2 which produces a longitudinal mechanical stress wave in a magnetostrictive loop 1. Waves travel in opposite directions round the loop and then coincide and reinforce each other at an output coil 3 which feeds an output device 8. The waves continue to circulate and to reappear after predetermined delays at the output transducer. A magnet 9 polarizes the input transducer 2 thus permitting the use of lower amplitude driving pulses. Similarly a second magnet 6 polarizes the output transducer. To counteract deterioration of the stress waves the signals from output amplifier 7 may be fed back periodically, under control of a unit 14, via a gate 10 and delay unit 11, to the input amplifier 5 which reinforces the attenuated waves passing at that instant. Erasure of the waves is performed by passing the output signals through a gate 12 and an inverter 13 before feeding them through the delay unit 11; the inverted signals arriving at the input transducer 2 tend to cancel the waves passing at that instant. In a more detailed embodiment (Fig. 2, not shown) three magneto-strictive storage loops are employed with common input, output and regenerating arrangements and a selector (e.g. an electronic distributer) for dealing with one loop at a time. Details of the circuits which are shown in block form in Fig. 1 are also given (Fig. 3, not shown). Construction of storage loop. To avoid acoustic discontinuities the ring may be cut from a sheet of nickel. Alternatively, a ring of brass or copper may be used which is plated with nickel in the vicinity of the transducers to provide magnetostrictive coupling. The construction in Specification 823,549 is referred to. Instead of a ring, a close helix of nickel wire may be employed, the output coils being wound over all the turns and the ends being mounted in absorbent material so that only one half of the stress wave passes through the output coils and then returns a number of times equal to the number of turns in the helix. Another form comprises a mercury delay line in the shape of a square or rectangle with reflectors and each corner and piezo-electric transducers recessed into two of the reflectors. The reflectors may be set at a slight angle to the plane of the square so that the stress waves follow a helical path.
Patent GB-1477666-A (GB)
Title: Cooling apparatus
IPC: B64D13/00
Filed: 1974-05-03
Abstract: 1477666 Refrigerating HYMATIC ENG CO Ltd 30 April 1975 [3 May 1974] 19607/74 Heading F4H A method of supplying liquid refrigerant through a transfer pipe 32 to an evaporator chamber 31 housing a load 10 comprises connecting the transfer pipe to a liquefier acting on the Joule Thompson principle. The liquefier includes an inlet 41 supplying gaseous refrigerant under high pressure from a cylinder 20 and at ambient temperature to flow through a first path of a heat exchanger, formed by two helically coiled finned tubes 44 connected in parallel, to an expansion nozzle 45. The refrigerant expands to an intermediate pressure above ambient pressure, causing some of the gas to liquefy into a chamber 46. The chamber 46 has at its lower end a nozzle 50 leading to a transfer pipe coupling 51 and the transfer pipe 32. The remainder of the gaseous refrigerant flows back through a second path of the heat exchanger formed by the space around the coils 44 to cool the incoming refrigerant.